Thread: Having Vacum Problems with C280... Pics attached, something seems off
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  #8  
Old 06-26-2002, 07:32 PM
MB STARS MB STARS is offline
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Join Date: Apr 1999
Location: Walnut,CA,USA
Posts: 554
That is your vacuum distributor block

P intake manifold vacuum (grey)
1 PSE control module (transparent)
2 A\C system (medium green)
3 A\C system vacuum reservoir (red\grey)
4 Upshift delay vacuum actuator (black\grey)
5 Automatic transmission vacuum reservoir (black\grey)
6 Open
7 Open

Check the vacuum distributor block sometime it leaks.
part number for vacuum block is 129-800-14-78
also it has vacuum reservoir inside your right front fander if the reservoir drops below 400mbar the PSE pump will starts until vacuum of approx 600mbar is obtained.
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